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    Three-dimensional oriented attachment growth of single-crystal pre-perovskite PbTiO3 hollowed fibers

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    Type
    Article
    Authors
    Zhao, Ruoyu
    Li, Ming cc
    Ren, Zhaohui cc
    Zhu, Yihan
    Han, Gaorong
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Biological and Environmental Sciences and Engineering (BESE) Division
    KAUST Catalysis Center (KCC)
    Physical Science and Engineering (PSE) Division
    Date
    2018
    Permanent link to this record
    http://hdl.handle.net/10754/627283
    
    Metadata
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    Abstract
    Hollowed single-crystal pre-perovskite PbTiO fibers (PP-PTF) were successfully synthesized via a polyvinyl alcohol (PVA) assisted hydrothermal process. The as-prepared PP-PTF were characterized to be 0.3-1 μm in diameter and tens of micrometers in length by adjusting the concentration of PVA to 0.8 g L. Microstructure characterization of the samples at different reaction times revealed that PP-PTF were formed via a three-dimensional (3D) hierarchical oriented attachment (OA) growth process. The initial growth units were determined to be single-crystal pre-perovskite PbTiO fibers with a diameter of 10-20 nm. Zeta potential measurement suggested that the main driving force of the OA process is the surface electrostatic force, which is induced by the incompletely bonded Pb and O atomic layers on the surface of the {110} plane. Moreover, molecular dynamics simulations have been employed to reveal a stable configuration of the initial pre-perovskite PbTiO growth units, agreeing well with the experimental results.
    Citation
    Zhao R, Li M, Ren Z, Zhu Y, Han G (2018) Three-dimensional oriented attachment growth of single-crystal pre-perovskite PbTiO3 hollowed fibers. CrystEngComm 20: 448–453. Available: http://dx.doi.org/10.1039/c7ce01780d.
    Sponsors
    This work was financially supported by the National Natural Science Foundation of China (No. 51232006 and 51472218) and the Fundamental Research Funds for the Central Universities (No. 2017FZA4008).
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    CrystEngComm
    DOI
    10.1039/c7ce01780d
    Additional Links
    http://pubs.rsc.org/en/Content/ArticleLanding/2018/CE/C7CE01780D#!divAbstract
    ae974a485f413a2113503eed53cd6c53
    10.1039/c7ce01780d
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; KAUST Catalysis Center (KCC)

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